Diffusion mechanism of split grouting
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摘要: 劈裂灌浆在实际工程中应用相当广泛。由于影响浆液扩散的因素众多,劈裂灌浆扩散机理尚不明确,尤其是不同给压方式（稳压和脉动）对浆液扩散的影响研究很少,对这两种方式下的劈裂灌浆机理进行了探讨。对于稳压灌浆方式,基于水力劈裂缝的扩展形态来考虑浆液的运动,视劈裂注浆扩散形态为平面辐射椭圆,采用恒缝高矩形断面模型,推导出宾汉流体的劈裂灌浆扩散方程,并分析了灌浆压力、浆材黏度、土体弹性模数、劈裂通道宽度对浆液扩散范围的影响。对于脉动灌浆方式,由于施加给受灌体荷载的延滞效应和脉动叠加作用,多次脉动灌入的浆液会使劈裂通道宽度逐渐增大,采用扁球体的劈裂灌浆模型,推导出脉动方式时的浆液扩散方程,分析了脉动灌浆频率等与浆液扩散距离的相互关系;结果表明,浆液的扩散距离与脉动频率的关系曲线存在一个极小值,发生在脉动频率为10 min次时,这一参数可作为脉动灌浆方式的控制参数。最后将前人的稳压灌浆模型与本文的脉动模型与相互比较,研究两种灌浆方式劈裂扩散机理的差异,得到脉动灌浆时浆液扩散距离要远短于稳压方式的,表明通过采用脉动灌浆,调节相关参数能有效控制浆材扩散范围,相关规律可为工程实际提供理论依据。Abstract: Splitting grouting is widely used in practical engineering. Due to the many factors influencing the diffusion of slurry, the mechanism of splitting grouting is not clear, especially the researches about effects of different pressure modes (regulation and pulsation) on the diffusion of slurry are scarce. The mechanism of splitting grouting of the above 2 pressure modes is discussed. As for the regulatory grouting, based on the expansion form of splitting cracks to consider the movement of slurry, the diffusion process is described as elliptical planar radiation using hydraulic fracturing model, and the equation for diffusion of splitting grouting under stable-pressure grouting is deduced. The influences of grouting pressure, slurry viscosity, elastic modulus and splitting channel width on diffusion area are analyzed. As for the pulsating grouting, slurry will make the split channel width gradually increase on account of the delay effect of the load applied to the filling and pulsating superposition. The grouting model for oblate ellipsoid is adopted, and the diffusion law of slurry of pulsating grouting is deduced. The results show that there is a minimum on the curve of relationship between the dispersion distance of slurry and the fluctuation frequency, occurring when the frequency is 10 times per minute. The parameter can be used as a control parameter for pulsating grouting. Finally, the difference between the grouting methods is studied by comparing the regulator grouting mode and the pulsation model. The diffusion distance of the latter is far shorter than that of the former. It is shown by using the pulsating grouting and adjusting the parameters can effectively control the diffusion range of slurry. The rules can provide a theoretical basis for engineering practice.
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Keywords:
- split grouting /
- stable-pressure grouting /
- diffusion radius /
- pulse grouting
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[1] 岩土注浆理论与工程实例协作组. 岩土注浆理论与工程实例[M]. 北京: 科学出版社, 2001: 75-77.
(Cooperative Group of Theory and Engineering Example of Rock and Soil Grouting. Theory and engineering example of rock and soil grouting[M]. Beijing: Science Press, 2001: 75-77. (in Chinese))[2] 张忠苗, 邹健. 桩底劈裂注浆扩散半径和注浆压力研究[J]. 岩土工程学报, 2008, 30(2): 181-184.
(ZHANG Zhong-miao, ZOU Jian.Penetration radius and grouting pressure in fracture grouting[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(2): 181-184. (in Chinese))[3] 孙峰, 陈铁林, 张顶立, 等. 基于宾汉体浆液的海底隧道劈裂注浆机理研究[J]. 北京交通大学学报, 2009, 33(4): 1-6.
(SUN Feng, CHEN Tie-lin, ZHANG Ding-li, et al.Study on fracture grouting mechanism in subsea tunnel based on bingham fluids[J]. Journal of Beijing Jiaotong University, 2009, 33(4): 1-6. (in Chinese))[4] 孙峰, 陈铁林, 张顶立, 等. 基于流体时变性的隧道劈裂注浆机理研究[J]. 岩土工程学报, 2011, 33(1): 88-93.
(SUN Feng, CHEN Tie-lin, ZHANG Ding-li, et al.Fracture grouting mechanism in tunnels based on time- dependentbehaviors of grout[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(1): 88-93. (in Chinese))[5] 邹金锋, 李亮, 杨小礼, 等. 劈裂注浆扩散半径及压力衰减分析[J]. 水利学报, 2006, 37(3): 314-319.
(ZOU Jin-feng, LI Liang, YANG Xiao-li, et al.Penetration radius and pressure attenuation law in fracturing grouting[J]. Journal of Hydraulic Engineering, 2006, 37(3): 314-319. (in Chinese))[6] 章敏, 王星华, 汪优, 等. Herschel-Bulkley 浆液在裂隙中的扩散规律研究[J]. 岩土工程学报, 2011, 33(5): 815-820.
(ZHANG Min, WANG Xing-hua, WANG You, et al.Diffusion of Herschel-Bulkley slurry in fractures[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(5): 815-820. (in Chinese))[7] 李术才, 张伟杰, 张庆松, 等. 富水断裂带优势劈裂注浆机制及注浆控制方法研究[J]. 岩土力学, 2014, 35(3): 744-751.
(LI Shu-cai, ZHANG Wei-jie, ZHANG Qing-song, et al.Research on advantage-fracture grouting mechanism and controlled grouting method in water-rich fault zone[J]. Rock and Soil Mechanics, 2014, 35(3): 744-751. (in Chinese))[8] 张庆松, 张连震, 刘人太, 等. 基于“浆-土”界面应力耦合效应的劈裂注浆理论研究[J]. 岩土工程学报, 2016, 38(2): 323-330.
(ZHANG Qing-song, ZHANG Lian-zhen, LIU Ren-tai, et al.Split grouting theory based on slurry-soil coupling effects[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(2): 323-330. (in Chinese))[9] 乌效鸣, 屠厚泽. 煤层水力压裂典型裂缝形态分析与基本尺寸确定[J]. 地球科学-中国地质大学学报, 1995, 20(1): 112-116.
(WU Xiao-ming, TU Hou-ze.Morphological analysis and geometrical size determination of representative hydraulic fractures in coal seam[J]. Earth Science-Journal of China University of Geosciences, 1995, 20(1): 112-116. (in Chinese))[10] 刘强, 张可能, 陈宾, 等. 不同土体中水泥-水玻璃浆液的扩散规律[J]. 中南大学学报(自然科学版), 2015, 46(1): 255-260.
(LIU Qiang, ZHANG Ke-neng, CHEN Bin, et al.Diffusion law of cement-sodium silicate grout in different soils[J]. Journal of Central South University (Science and Technology), 2015, 46(1): 255-260. (in Chinese))[11] 张贵金, 肖通, 张聪, 等. 松散地层脉动与稳压灌浆室内试验研究[J]. 水文地质工程地质, 2016, 43(5): 87-93.
(ZHANG Gui-jin, XIAO Tong, ZHANG Cong, et al.An indoor experimental study of loose soil strata pulsating and regulated filling[J]. Hydrogeology and Engineering Geology, 2016, 43(5): 87-93. (in Chinese))[12] 于光海. 不规则脉动压力灌浆技术在砌石坝防渗治漏中的应用[J]. 山东水利科技, 1994(1): 11-12.
(YU Guang-hai.Irregular pulse pressure grouting technology in the application of the masonry dam anti-seepage leakage cure[J]. Water Resources Science and Technology of Shandong, 1994(1): 11-12. (in Chinese))[13] 张贵金, 许毓才, 陈安重, 等. 一种适合松软地层高效控制灌浆的新工法——自下而上、浆体封闭、高压脉动灌浆[J]. 水利水电技术, 2012, 43(3): 38-41.
(ZHANG Gui-jin, XU Yu-cai, CHEN An-zhong, et al.A new technical method for efficient and control grouting for loose ground———high pulsating pressure grouting from bottom to up stemming with slurry[J]. Water Resources and Hydropower Engineering, 2012, 43(3): 38-41. (in Chinese))[14] 田素川. 裂隙岩体注浆浆液扩散规律研究[D]. 徐州: 中国矿业大学, 2014.
(TIAN Su-chuan.Study on flow law of grout diffusion in fractured rock[D]. Xuzhou: China University of Mining and Technology, 2014. (in Chinese))[15] 阳友奎, 肖长富, 邱贤德, 等. 水力压裂裂缝形态与缝内压力分布[J]. 重庆大学学报(自然科学版), 1995, 18(3): 20-26.
(YANG You-kui, XIAO Chang-fu, QIU Xian-de, et al.Fracture geometry and pressure distribution in fracture for hydrofracturing[J]. Journal of Chongqing University (Natural Science Edition), 1995, 18(3): 20-26. (in Chinese))[16] SNEDDON I N.The distribution of stress in the neighbourhood of a crack in an elastic solid[J]. Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1946: 229-260. -
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